<!doctype html>
<html>
  <head>
    <title>CodeMirror: Visible tabs demo</title>
    <link rel="stylesheet" href="../lib/codemirror.css">
    <script src="../lib/codemirror.js"></script>
    <script src="../mode/clike/clike.js"></script>
    <link rel="stylesheet" href="../doc/docs.css">

    <style type="text/css">
      .CodeMirror {border-top: 1px solid #eee; border-bottom: 1px solid #eee;}
      .cm-tab:after {
        content: "\21e5";
        display: -moz-inline-block;
        display: -webkit-inline-block;
        display: inline-block;
        width: 0px;
        position: relative;
        overflow: visible;
        left: -1.4em;
        color: #aaa;
      }
    </style>
  </head>
  <body>
    <h1>CodeMirror: Visible tabs demo</h1>

    <form><textarea id="code" name="code">
#include "syscalls.h"
/* getchar:  simple buffered version */
int getchar(void)
{
	static char buf[BUFSIZ];
	static char *bufp = buf;
	static int n = 0;
	if (n == 0) {  /* buffer is empty */
		n = read(0, buf, sizeof buf);
		bufp = buf;
	}
	return (--n >= 0) ? (unsigned char) *bufp++ : EOF;
}
</textarea></form>

<p>Tabs inside the editor are spans with the
class <code>cm-tab</code>, and can be styled. This demo uses
an <code>:after</code> pseudo-class CSS hack that will not work on old
browsers. You can use a more conservative technique like a background
image as an alternative.</p>

    <script>
      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
        lineNumbers: true,
        tabSize: 4,
        indentUnit: 4,
        indentWithTabs: true,
        mode: "text/x-csrc"
      });
    </script>

  </body>
</html>
